Proxima Centauri b: May 2019

We study temporal variations of the emission lines of Halpha, Hepsilon, H and K Ca II, D1 and D2 Na I, 4026 and 5876 A He I in the HARPS spectra of Proxima Centauri across an extended time of 13.2 years, from May 27, 2004, to September 30, 2017.

We report Spitzer Space Telescope observations during predicted transits of the exoplanet Proxima Centauri b.